<?php

/**
 * mForge Framework
 *
 * LICENSE:
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * The license is bundled with this package in the file LICENSE.txt.
 * You may also obtain a copy of the License at this URL:
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @copyright  Copyright (c) 2011, Jonathan Hedrén
 * @author     Jonathan Hedrén <jonathan.hedren@gmail.com>
 * @license    http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 */

namespace mForge;

/**
 *
 */
interface IFilterAttribute
{
    /**
     *
     * @param mixed $value
     */
    function filter($value);
}

/**
 *
 */
class TrimAttribute implements IFilterAttribute
{
    /**
     *
     * @param mixed $value
     * @return string
     */
    public function filter($value)
    {
        return trim((string) $value);
    }
}

/**
 *
 */
class StripTagsAttribute implements IFilterAttribute
{
    /**
     *
     * @param mixed $value
     * @return string
     */
    public function filter($value) {
        return filter_var((string) $value, \FILTER_SANITIZE_STRING);
    }
}

/**
 * 
 */
class UrlEncodeAttribute implements IFilterAttribute
{
    /**
     *
     * @param mixed $value
     * @return string
     */
    public function filter($value) {
        return filter_var((string) $value, \FILTER_SANITIZE_ENCODED);
    }
}

/**
 * 
 */
class HtmlEscapeAttribute implements IFilterAttribute
{
    /**
     *
     * @param mixed $value
     * @return string
     */
    public function filter($value) {
        return filter_var((string) $value, \FILTER_SANITIZE_SPECIAL_CHARS);
    }
}